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swad-core/swad_social.c

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// swad_social.c: social networking
/*
SWAD (Shared Workspace At a Distance),
is a web platform developed at the University of Granada (Spain),
and used to support university teaching.
This file is part of SWAD core.
Copyright (C) 1999-2015 Antonio Cañas Vargas
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General 3 License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*****************************************************************************/
/*********************************** Headers *********************************/
/*****************************************************************************/
#include <linux/limits.h> // For PATH_MAX
#include <stdlib.h> // For malloc and free
#include <sys/types.h> // For time_t
#include "swad_constant.h"
#include "swad_database.h"
#include "swad_exam.h"
#include "swad_global.h"
#include "swad_layout.h"
#include "swad_notice.h"
#include "swad_social.h"
/*****************************************************************************/
/****************************** Public constants *****************************/
/*****************************************************************************/
/*****************************************************************************/
/***************************** Private constants *****************************/
/*****************************************************************************/
#define Soc_MAX_BYTES_SUMMARY 100
/*****************************************************************************/
/****************************** Internal types *******************************/
/*****************************************************************************/
/*****************************************************************************/
/************** External global variables from others modules ****************/
/*****************************************************************************/
extern struct Globals Gbl;
/*****************************************************************************/
/************************* Internal global variables *************************/
/*****************************************************************************/
/*****************************************************************************/
/***************************** Private prototypes ****************************/
/*****************************************************************************/
static Soc_SocialEvent_t Soc_GetSocialEventFromDB (const char *Str);
static void Soc_WriteEventDate (time_t TimeUTC);
static void Soc_GetEventSummary (Soc_SocialEvent_t SocialEvent,long Cod,
char *SummaryStr,unsigned MaxChars);
/*****************************************************************************/
/*********************** Show social activity (timeline) *********************/
/*****************************************************************************/
void Soc_ShowSocialActivity (void)
{
extern const char *Txt_Public_activity;
extern const char *Txt_SOCIAL_EVENT[Soc_NUM_SOCIAL_EVENTS];
extern const char *Txt_Forum;
extern const char *Txt_Course;
extern const char *Txt_Degree;
extern const char *Txt_Centre;
extern const char *Txt_Institution;
extern const char *Txt_Country;
char Query[512];
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned long NumEvents;
unsigned long NumEvent;
Soc_SocialEvent_t SocialEvent;
struct UsrData UsrDat;
struct Country Cty;
struct Institution Ins;
struct Centre Ctr;
struct Degree Deg;
struct Course Crs;
long Cod;
char ForumName[512];
time_t DateTimeUTC; // Date-time of the event
bool ShowPhoto = false;
char PhotoURL[PATH_MAX+1];
char *SummaryStr;
/***** Get my timeline from database *****/
sprintf (Query,"SELECT SocialEvent,UsrCod,"
"CtyCod,InsCod,CtrCod,DegCod,CrsCod,"
"Cod,UNIX_TIMESTAMP(TimeEvent)"
" FROM social,usr_follow"
" WHERE usr_follow.FollowerCod='%ld'"
" AND usr_follow.FollowedCod=social.UsrCod"
" ORDER BY SocCod DESC LIMIT 10",
Gbl.Usrs.Me.UsrDat.UsrCod);
NumEvents = DB_QuerySELECT (Query,&mysql_res,"can not get your notifications");
/***** List my timeline *****/
if (NumEvents) // Events found
{
/***** Allocate memory for the summary of the notification *****/
if ((SummaryStr = malloc (Cns_MAX_BYTES_TEXT+1)) == NULL)
Lay_ShowErrorAndExit ("Not enough memory to store the summary of the notification.");
/***** Initialize structure with user's data *****/
Usr_UsrDataConstructor (&UsrDat);
/***** List start *****/
Lay_StartRoundFrame (NULL,Txt_Public_activity);
fprintf (Gbl.F.Out,"<ul class=\"LIST_LEFT\">");
/***** List events one by one *****/
for (NumEvent = 0;
NumEvent < NumEvents;
NumEvent++)
{
/***** Get next social event *****/
row = mysql_fetch_row (mysql_res);
/* Get event type (row[0]) */
SocialEvent = Soc_GetSocialEventFromDB ((const char *) row[0]);
/* Get (from) user code (row[1]) */
UsrDat.UsrCod = Str_ConvertStrCodToLongCod (row[1]);
Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&UsrDat); // Get user's data from the database
/* Get country code (row[2]) */
Cty.CtyCod = Str_ConvertStrCodToLongCod (row[2]);
Cty_GetDataOfCountryByCod (&Cty,Cty_GET_BASIC_DATA);
/* Get institution code (row[3]) */
Ins.InsCod = Str_ConvertStrCodToLongCod (row[3]);
Ins_GetDataOfInstitutionByCod (&Ins,Ins_GET_BASIC_DATA);
/* Get centre code (row[4]) */
Ctr.CtrCod = Str_ConvertStrCodToLongCod (row[4]);
Ctr_GetDataOfCentreByCod (&Ctr);
/* Get degree code (row[5]) */
Deg.DegCod = Str_ConvertStrCodToLongCod (row[5]);
Deg_GetDataOfDegreeByCod (&Deg);
/* Get course code (row[6]) */
Crs.CrsCod = Str_ConvertStrCodToLongCod (row[6]);
Crs_GetDataOfCourseByCod (&Crs);
/* Get file/post... code (row[7]) */
Cod = Str_ConvertStrCodToLongCod (row[7]);
/* Get forum type of the post */
if (SocialEvent == Soc_EVENT_FORUM_POST)
{
Gbl.Forum.ForumType = For_GetForumTypeOfAPost (Cod);
For_SetForumName (Gbl.Forum.ForumType,
&Ins,
&Ctr,
&Deg,
&Crs,
ForumName,Gbl.Prefs.Language,false); // Set forum name in recipient's language
Gbl.Forum.Ins.InsCod = Ins.InsCod;
Gbl.Forum.Ctr.CtrCod = Ctr.CtrCod;
Gbl.Forum.Deg.DegCod = Deg.DegCod;
Gbl.Forum.Crs.CrsCod = Crs.CrsCod;
}
/* Get time of the event (row[8]) */
DateTimeUTC = Dat_GetUNIXTimeFromStr (row[8]);
/***** Write row for this social event *****/
fprintf (Gbl.F.Out,"<li>");
/* Left: write author's photo */
fprintf (Gbl.F.Out,"<div class=\"SOCIAL_LEFT_PHOTO\">");
ShowPhoto = Pho_ShowUsrPhotoIsAllowed (&UsrDat,PhotoURL);
Pho_ShowUsrPhoto (&UsrDat,ShowPhoto ? PhotoURL :
NULL,
"PHOTO60x80",Pho_ZOOM);
fprintf (Gbl.F.Out,"</div>");
/* Right: author's name, time and summary */
fprintf (Gbl.F.Out,"<div class=\"SOCIAL_RIGHT_CONTAINER\">");
/* Write author's full name and nickname */
fprintf (Gbl.F.Out,"<div class=\"SOCIAL_RIGHT_AUTHOR\">"
"<span class=\"DAT_N_BOLD\">%s</span>"
"<span class=\"DAT_LIGHT\"> @%s</span>"
"</div>",
UsrDat.FullName,UsrDat.Nickname);
/* Write date and time */
Soc_WriteEventDate (DateTimeUTC);
/* Write event type and location */
if (SocialEvent != Soc_EVENT_SOCIAL_POST)
{
fprintf (Gbl.F.Out,"<div class=\"DAT_N\">%s</div>",
Txt_SOCIAL_EVENT[SocialEvent]);
if (SocialEvent == Soc_EVENT_FORUM_POST)
fprintf (Gbl.F.Out,"<div class=\"DAT\">%s: %s</div>",
Txt_Forum,ForumName);
else if (Crs.CrsCod > 0)
fprintf (Gbl.F.Out,"<div class=\"DAT\">%s: %s</div>",
Txt_Course,Crs.ShortName);
else if (Deg.DegCod > 0)
fprintf (Gbl.F.Out,"<div class=\"DAT\">%s: %s</div>",
Txt_Degree,Deg.ShortName);
else if (Ctr.CtrCod > 0)
fprintf (Gbl.F.Out,"<div class=\"DAT\">%s: %s</div>",
Txt_Centre,Ctr.ShortName);
else if (Ins.InsCod > 0)
fprintf (Gbl.F.Out,"<div class=\"DAT\">%s: %s</div>",
Txt_Institution,Ins.ShortName);
else if (Cty.CtyCod > 0)
fprintf (Gbl.F.Out,"<div class=\"DAT\">%s: %s</div>",
Txt_Country,Cty.Name[Gbl.Prefs.Language]);
}
/* Write content of the event */
Soc_GetEventSummary (SocialEvent,Cod,
SummaryStr,Soc_MAX_BYTES_SUMMARY);
fprintf (Gbl.F.Out,"<div class=\"DAT\">%s</div>",SummaryStr);
/* End of right part */
fprintf (Gbl.F.Out,"</div>");
/* End of list element */
fprintf (Gbl.F.Out,"</li>");
}
/***** List end *****/
fprintf (Gbl.F.Out,"</ul>");
Lay_EndRoundFrame ();
/***** Free memory used for user's data *****/
Usr_UsrDataDestructor (&UsrDat);
/***** Free summary *****/
free ((void *) SummaryStr);
}
else
Lay_ShowAlert (Lay_INFO,"No events."); // Need translation!!!!
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
}
/*****************************************************************************/
/****** Get social event type from string number coming from database ********/
/*****************************************************************************/
static Soc_SocialEvent_t Soc_GetSocialEventFromDB (const char *Str)
{
unsigned UnsignedNum;
if (sscanf (Str,"%u",&UnsignedNum) == 1)
if (UnsignedNum < Soc_NUM_SOCIAL_EVENTS)
return (Soc_SocialEvent_t) UnsignedNum;
return Soc_EVENT_UNKNOWN;
}
/*****************************************************************************/
/**************** Write the date of creation of a social event ***************/
/*****************************************************************************/
// TimeUTC holds UTC date and time in UNIX format (seconds since 1970)
static void Soc_WriteEventDate (time_t TimeUTC)
{
extern const char *Txt_Today;
static unsigned UniqueId = 0;
UniqueId++;
/***** Start cell *****/
fprintf (Gbl.F.Out,"<div id=\"date_%u\" class=\"SOCIAL_RIGHT_TIME DAT_LIGHT\""
" style=\"display:inline-block;\">",
UniqueId);
/***** Write date and time *****/
fprintf (Gbl.F.Out,"<script type=\"text/javascript\">"
"writeLocalDateTimeFromUTC('date_%u',%ld,'&nbsp;','%s');"
"</script>",
UniqueId,(long) TimeUTC,Txt_Today);
/***** End cell *****/
fprintf (Gbl.F.Out,"</div>");
}
/*****************************************************************************/
/******************* Get social event summary and content ********************/
/*****************************************************************************/
static void Soc_GetEventSummary (Soc_SocialEvent_t SocialEvent,long Cod,
char *SummaryStr,unsigned MaxChars)
{
SummaryStr[0] = '\0';
switch (SocialEvent)
{
case Soc_EVENT_UNKNOWN:
break;
case Soc_EVENT_INS_DOC_PUB_FILE:
case Soc_EVENT_INS_SHA_PUB_FILE:
case Soc_EVENT_CTR_DOC_PUB_FILE:
case Soc_EVENT_CTR_SHA_PUB_FILE:
case Soc_EVENT_DEG_DOC_PUB_FILE:
case Soc_EVENT_DEG_SHA_PUB_FILE:
case Soc_EVENT_CRS_DOC_PUB_FILE:
case Soc_EVENT_CRS_SHA_PUB_FILE:
Brw_GetSummaryAndContentOrSharedFile (SummaryStr,NULL,Cod,MaxChars,false);
break;
case Soc_EVENT_EXAM_ANNOUNCEMENT:
Exa_GetSummaryAndContentExamAnnouncement (SummaryStr,NULL,Cod,MaxChars,false);
break;
case Soc_EVENT_SOCIAL_POST:
// TODO: Implement social posts
break;
case Soc_EVENT_NOTICE:
Not_GetSummaryAndContentNotice (SummaryStr,NULL,Cod,MaxChars,false);
break;
case Soc_EVENT_FORUM_POST:
For_GetSummaryAndContentForumPst (SummaryStr,NULL,Cod,MaxChars,false);
break;
}
}
/*****************************************************************************/
/********************* Store a social event into database ********************/
/*****************************************************************************/
void Soc_StoreSocialEvent (Soc_SocialEvent_t SocialEvent,long Cod)
{
char Query[512];
long CtyCod;
long InsCod;
long CtrCod;
long DegCod;
long CrsCod;
if (SocialEvent == Soc_EVENT_FORUM_POST)
{
// CtyCod = Gbl.Forum.Cty.CtyCod;
// InsCod = Gbl.Forum.Ins.InsCod;
// CtrCod = Gbl.Forum.Ctr.CtrCod;
// DegCod = Gbl.Forum.Deg.DegCod;
// CrsCod = Gbl.Forum.Crs.CrsCod;
CtyCod = -1L;
InsCod = -1L;
CtrCod = -1L;
DegCod = -1L;
CrsCod = -1L;
}
else
{
CtyCod = Gbl.CurrentCty.Cty.CtyCod;
InsCod = Gbl.CurrentIns.Ins.InsCod;
CtrCod = Gbl.CurrentCtr.Ctr.CtrCod;
DegCod = Gbl.CurrentDeg.Deg.DegCod;
CrsCod = Gbl.CurrentCrs.Crs.CrsCod;
}
/***** Store notify event *****/
sprintf (Query,"INSERT INTO social (SocialEvent,UsrCod,"
"CtyCod,InsCod,CtrCod,DegCod,CrsCod,"
"Cod,TimeEvent)"
" VALUES ('%u','%ld',"
"'%ld','%ld','%ld','%ld','%ld',"
"'%ld',NOW())",
(unsigned) SocialEvent,Gbl.Usrs.Me.UsrDat.UsrCod,
CtyCod,InsCod,CtrCod,DegCod,CrsCod,
Cod);
DB_QueryINSERT (Query,"can not create new social event");
}
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